CN109722019A - A kind of cold-resistant toughened nylon composite materials and preparation method thereof - Google Patents
A kind of cold-resistant toughened nylon composite materials and preparation method thereof Download PDFInfo
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- CN109722019A CN109722019A CN201811607151.8A CN201811607151A CN109722019A CN 109722019 A CN109722019 A CN 109722019A CN 201811607151 A CN201811607151 A CN 201811607151A CN 109722019 A CN109722019 A CN 109722019A
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Abstract
The invention discloses a kind of cold-resistant toughened nylon composite materials and preparation method thereof, including following raw material by weight: transparent nylon 79-89, toughener 10-20, antioxidant 0.1-1, lubricant 0.1-1；The antioxidant is that Hinered phenols antioxidant is compounded with phosphite ester antioxidant by 1:1 weight ratio.The present invention is compared with prior art, it uses crystallinity low or amorphous transparent nylon is basic resin, suitable toughener is added, on the basis of keeping original mechanical property of materials, improve the toughness of transparent nylon material, the low temperature impact properties of material have been improved particularly, 23 DEG C of notch impact strength >=70KJ/m are obtained2, -50 DEG C of notch impact strength >=20KJ/m2Nylon composite materials.
Description
Technical field
The present invention relates to technical field of polymer materials, specifically cold-resistant, tenacity increased nylon composite material and its preparation
Method.
Background technique
Tenacity nylon material is widely used to the fields such as harness, band at present, and the various types of tenacity increased nylon have toughening
The materials such as PA66, toughening PA6, the room temperature notch impact strength of common tenacity nylon material is very high in the market, can reach 70KJ/m2
More than, but the notch impact strength under cryogenic conditions is lower, such as under the conditions of -50 DEG C, toughened PA 66 and toughening PA6 material
Notch impact strength be difficult more than 12KJ/m2, therefore, in the region of extreme cold or practical service environment in ultralow temperature
Under the conditions of field, the application of toughened PA 66 and toughening PA6 material is limited by very large.And toughening is carried out to transparent nylon
It is modified, the low temperature impact properties of material can be significantly improved.By the optimization of technique and formula, toughening transparent nylon material is lacked
Mouth impact strength is similar with common toughened PA 66, toughening PA6 product at 23 DEG C, and notch impact strength can reach 70KJ/m2With
On, but transparent tenacity nylon material still has good toughness under -50 DEG C of condition of ultralow temperature, notch impact strength can
Reach 20KJ/m2More than, compared with common toughened PA 66 and toughening PA6, low temperature notched impact strength has obvious change
It is kind.
Summary of the invention
The purpose of the present invention is aiming at the problem that above-mentioned tenacity nylon material, provide a kind of cold-resistant toughened nylon composite materials
And preparation method thereof.
The present invention to achieve the above object, is achieved using following technical scheme:
A kind of cold-resistant toughened nylon composite materials, including following raw material by weight: transparent nylon 79-89, toughening
Agent 10-20, antioxidant 0.1-1, lubricant 0.1-1；The antioxidant is Hinered phenols antioxidant and phosphite ester antioxidant
It is compounded by 1:1 weight ratio.
The transparent nylon is the copolymer of PA6I, PA6I and PA6T.
The toughener is that maleic anhydride is grafted POE.
The lubricant is silicone, amide series lubricant agent.
Above-mentioned cold-resistant toughened nylon composite materials and preparation method thereof, which is characterized in that this method includes following step
It is rapid:
(1) transparent nylon, toughener, antioxidant, lubricant are uniformly mixed in a high speed mixer in proportion.
(2) said mixture is added twin-screw extrude into melting extrusion, at the same by after melt extrudate tie rod through cold
But, after air-dried, pelletizing, homogenizing, the nylon composite materials for having cold resistance, superhigh tenacity are obtained.
The mixing time of mixture is 2-3min in the first step.
In the second step double screw extruder temperature of each section be followed successively by 220 DEG C, 230 DEG C, 240 DEG C, 245 DEG C, 245 DEG C,
250 DEG C, 245 DEG C, 245 DEG C, 240 DEG C of head temperature, screw speed 300-400rpm.
The temperature of each section of the injection molding machine is followed successively by 240 DEG C, 250 DEG C, 255 DEG C, 260 DEG C.
Compared with prior art, the present invention using crystallinity low or amorphous transparent nylon is basic resin, it is added
Suitable toughener improves the toughness of transparent nylon material, is improved particularly on the basis of keeping original mechanical property of materials
The low temperature impact properties of material, obtain 23 DEG C of notch impact strength >=70KJ/m2, -50 DEG C of notch impact strength >=20KJ/m2
Nylon composite materials.
Specific implementation method
Below with reference to specific embodiment, the present invention is described in detail
Embodiment 1-6, specific formula are as shown in table 1:
The formula of 1 embodiment 1-6 of table
The processing technology of 2 composite material of table
The performance data of 3 embodiment 1-6 of table
By the comparison of above-mentioned 6 embodiments as can be seen that by being formulated the optimization with technique and the drawing of material can be made
It stretches intensity, bending strength, low temperature notched impact strength and reaches optimum efficiency.
Above-described embodiment is preferred forms of the invention, but embodiments of the present invention are not by above-described embodiment
Limitation, other any changes, modifications, substitutions, combinations, simplifications made without departing from the spirit and principles of the present invention are equal
It should be equivalent substitute mode, be included in the interest field for limiting the present invention within protection scope of the present invention.
Claims (9)
1. a kind of cold-resistant toughened nylon composite materials, it is characterised in that: including following raw material by weight: transparent nylon
79-89, toughener 10-20, antioxidant 0.1-1, lubricant 0.1-1.
2. a kind of cold-resistant toughened nylon composite materials according to claim 1, it is characterised in that: the transparent nylon is
The copolymer of PA6I, PA6I and PA6T.
3. a kind of cold-resistant toughened nylon composite materials according to claim 1, it is characterised in that: the toughener is Malaysia
Acid anhydrides is grafted POE.
4. a kind of cold-resistant toughened nylon composite materials according to claim 1, it is characterised in that: the antioxidant is to be obstructed
Phenolic antioxidant is compounded with phosphite ester antioxidant by 1:1 weight ratio.
5. a kind of cold-resistant toughened nylon composite materials according to claim 1, it is characterised in that: the lubricant is silicone
Class, amide series lubricant agent.
The preparation method of cold-resistant toughened nylon composite materials described in 6. claim 1-5 is one of any, it is characterised in that: including with
Under several steps:
(1) transparent nylon, toughener, antioxidant, lubricant are uniformly mixed in a high speed mixer in proportion.
(2) said mixture is added twin-screw extrude into melting extrusion, at the same by after melt extrudate tie rod through cooling, wind
After dry, pelletizing, homogenizing, the nylon composite materials for having cold resistance, superhigh tenacity are obtained.
7. a kind of preparation method of cold-resistant toughened nylon composite materials according to claim 6, it is characterised in that: described
The mixing time of mixture is 2-3min in one step.
8. a kind of preparation method of cold-resistant toughened nylon composite materials according to claim 6, it is characterised in that: described
Double screw extruder temperature of each section is followed successively by 220 DEG C, 230 DEG C, 240 DEG C, 245 DEG C, 245 DEG C, 250 DEG C, 245 DEG C, 245 in two steps
DEG C, 240 DEG C of head temperature, screw speed 300-400rpm.
9. a kind of preparation method of cold-resistant toughened nylon composite materials according to claim 6, it is characterised in that: the note
The temperature of each section of molding machine is followed successively by 240 DEG C, 250 DEG C, 255 DEG C, 260 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811607151.8A CN109722019A (en) | 2018-12-27 | 2018-12-27 | A kind of cold-resistant toughened nylon composite materials and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811607151.8A CN109722019A (en) | 2018-12-27 | 2018-12-27 | A kind of cold-resistant toughened nylon composite materials and preparation method thereof |
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|---|---|
| CN109722019A true CN109722019A (en) | 2019-05-07 |
Family
ID=66297352
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| CN201811607151.8A Pending CN109722019A (en) | 2018-12-27 | 2018-12-27 | A kind of cold-resistant toughened nylon composite materials and preparation method thereof |
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Application publication date: 20190507 |